Prestressed Beam Material Properties for 1961 Project
Prestressed Beam Material Properties for 1961 Project
(OP)
Hi all,
Anyone know of a good location to find historic prestressed values for specifically f'c and fpu? Below is a beam sketch. I've looked online and I have a 1st edition PCI design handbook but it only goes back to 1971. It's on my list to buy historic ACI 318, but I haven't got around to it yet. I've scoured the original drawings for a note defining f'c and fpu and there is none to be found. Not even design loads, which isn't all that uncommon for a 1961 structure, but I was hoping for at least something. Anyone experienced structures of that age. Project location is North Carolina.
Thanks,
Nick
Anyone know of a good location to find historic prestressed values for specifically f'c and fpu? Below is a beam sketch. I've looked online and I have a 1st edition PCI design handbook but it only goes back to 1971. It's on my list to buy historic ACI 318, but I haven't got around to it yet. I've scoured the original drawings for a note defining f'c and fpu and there is none to be found. Not even design loads, which isn't all that uncommon for a 1961 structure, but I was hoping for at least something. Anyone experienced structures of that age. Project location is North Carolina.
Thanks,
Nick






RE: Prestressed Beam Material Properties for 1961 Project
RE: Prestressed Beam Material Properties for 1961 Project
RE: Prestressed Beam Material Properties for 1961 Project
Was the "final 15.1k" after the estimated losses? I get a similar value when I take 250ksi*0.106in^2*0.7*0.8=14.84k, which is 0.7*fpu with a then 0.80 lumped factor for losses. Thanks.
RE: Prestressed Beam Material Properties for 1961 Project